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DNP is dynamic nuclear polarization.Meaning the population of nuclei in higher and lower energy levels changes dynamically.This enhances Low signal sensitivity of solid state NMR [SSNMR]. This can be used for the study of polypeptides with 17 fold enhancement of signal intensity.A biradical is anchored in a membrane.

First aromatic molecule identified in interstellar space

The antiproton, 
p
, (pronounced p-bar) is the antiparticle of the proton. Antiprotons are stable, but they are typically short-lived, since any collision with a proton will cause both particles to be annihilated in a burst of energy.